Rapid and sensitive determination of tartrazine using a molecularly imprinted copolymer modified carbon electrode (MIP-PmDB/PoPD-GCE)

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• 作者：Xiaoyu Zhao^a ; ^b ; ^{xyz@tust.edu.cn} ; Yingzi Liu^a ; Juanjuan Zuo^a ; Jin Zhang^b ; Liang Zhu^b ; Juankun Zhang^a ; ^{zhangjk@tust.edu.cn}
• 关键词：Tartrazine ; Electropolymerization ; Molecularly imprinted copolymer ; Electrochemical sensor ; Highly sensitive detection
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：785
• 期：Complete
• 页码：90-95
• 全文大小：974 K
• 卷排序：785

文摘

A novel molecularly imprinted copolymers sensor for fast and direct determination of tartrazine (TZ) was studied. The copolymers were immobilized on the surface of the glassy carbon electrode (GCE) directly via electropolymerization with m-dihydroxybenzene (m-DB) and o-phenylenediamine (o-PD) as monomers. After elution, the copolymer was filled with nanopores that can specially bounds with tartrazine molecule. The developed sensor (MIP-PmDB/PoPD-GCE) determinates tartrazine specifically and quickly in the soft drinks sample without pretreatment. The linear relationship between the currents and the tartrazine concentration was 5.0 nM-1.1 μM, and a sensitivity limit of 3.5 nM was achieved. The whole process cost less than 5 min. The success practical application of MIP-PmDB/PoPD-GCE sensor on analyzing TZ in soft drink samples offers a promising potential on fast directly determination of tartrazine.